Creation of superfluid helium rotons by a solid’s phonons incident normal to the interface
We solve the one-dimensional problem of quasiparticles’ transfer through the interface between a solid and superfluid helium. Superfluid helium is treated as a continuous medium with correlations. When a solid’s phonon is incident on the interface, phonons, R⁻ and R⁺rotons are created in helium, and...
Збережено в:
| Дата: | 2007 |
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| Автори: | , , |
| Формат: | Стаття |
| Мова: | English |
| Опубліковано: |
Національний науковий центр «Харківський фізико-технічний інститут» НАН України
2007
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| Назва видання: | Вопросы атомной науки и техники |
| Теми: | |
| Онлайн доступ: | https://nasplib.isofts.kiev.ua/handle/123456789/111060 |
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Цитувати: | Creation of superfluid helium rotons by a solid’s phonons incident normal to the interface / I.N. Adamenko, K.E Nemchenko, I.V. Tanatarov // Вопросы атомной науки и техники. — 2007. — № 3. — С. 404-409. — Бібліогр.: 8 назв. — англ. |
Репозитарії
Digital Library of Periodicals of National Academy of Sciences of Ukraine| Резюме: | We solve the one-dimensional problem of quasiparticles’ transfer through the interface between a solid and superfluid helium. Superfluid helium is treated as a continuous medium with correlations. When a solid’s phonon is incident on the interface, phonons, R⁻ and R⁺rotons are created in helium, and their creation probabilities are obtained. When a quasiparticle of superfluid helium is incident, it can be reflected as any one of the three quasiparticles, and the corresponding probabilities are derived. The R⁻ rotons creation and detection probability are both shown to be small, and this explains why they could not be detected experimentally for a long time. |
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